Gas assist injection molding is an innovative technology that offers several advantages over traditional plastic injection molding. One of the key advantages is the ability to create hollow parts that are light and relatively inexpensive to make. This is achieved by introducing compressed nitrogen gas into a mold cavity after it has been filled with plastic. The nitrogen gas displaces a portion of the molten plastic, resulting in hollow parts.
Another advantage of gas assist injection molding is the ability to create thin-walled parts with low clamp tonnage. This reduces both tooling cost and required injection molding machine size. In addition, the gas-assist technique is ideal for adding thick, hollowed-out sections to otherwise thin-walled parts, which is not possible with traditional plastic injection molding.
Gas assist injection molding also improves upon polymer fill and packing techniques and boosts melt-flow length. A designer can create larger, more-complex parts with fewer injection gates than conventional molding, while minimizing costs incurred with complicated hot-runner systems. In addition, the sections that are cored out cool rapidly, reducing overall cycle time.
Overall, gas assist injection molding offers several advantages over traditional plastic injection molding, including the ability to create hollow parts, thin-walled parts with low clamp tonnage, and larger, more-complex parts with fewer injection gates. As a result, HS Mold is proud to offer gas assist injection molding as a viable alternative to traditional plastic injection molding for our customers.